DE8405698U1 - PASSENGER VEHICLE - Google Patents

Description

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ParBonenkraftwaaen

The innovation relates to a passenger car

at least two driven wheels and one on the wheel * brake this wheel-acting park-brake system, consisting composed of two power transmission organs, each at one end with a wheel brake and at the other end with a swivel

Intermediate lever is connected »which in turn with a Betöti-

G ing element for the pressure brakes is in connection. j

Passenger cars of this type are known, and in the '· It is usually common to have at least two driven wheels over

a differential with each other as well as with the drive motor of the {■

To connect passenger cars «!

Especially with SGhnee * or icy roadway, it is provided that no lockable and therefore expensive differential is provided ₅ often difficult one stuck cars | when the driven wheels on both sides of the vehicle are on a surface with very different levels of grip. In this case, because of the existing, non-lockable differential, the driven wheel standing on the better adhering surface remains without a drive, while the driven wheel standing on the smooth surface spins. In these cases it is so far only possible to start the vehicle with your own power if chains or starting aids are provided, or other aids such as sand etc. * are used *

The innovation is based on the task of designing a passenger car so that it can be used in the above-mentioned situation can be approached with its own strength and without the use of additional aids.

To solve this task a passenger car is the initially described type according to the invention se formed that .Each power transmission concern in a separate intermediate lever attacks; that the intermediate levers on a common shaft and in relation to this pivotally attached Bind that the shaft either directly or via another power transmission element is connected to the actuating element, and that each Zwi-SGhenhebel has a fliehe stop which is attached to the shaft Counter stop is assigned, with the counter stop and counter » stop are arranged so that each intermediate lever in a Sehwenkriehtung corresponding to the actuation of the wheel brakes the stop surface leads the associated counter stop.

In the passenger car according to the invention, it is possible by individually actuating the intermediate lever, which can be done, for example, by a direct or indirect action on each intermediate lever attacking further actuating element can take place, the individual wheel brakes of the driven wheels individually actuate »whereby in the case of a stuck car, the spinning driven wheel is deliberately braked can be so that the power transmission or <the drive via the differential to the non-spinning driven wheel takes place and thereby the passenger cars are approached can. The innovation according to the passenger car is also designed so that with the help of the actuator for Parking brake the wheel brakes are operated together so that Despite the possibility of individual actuation of individual wheel brakes when the vehicle is stationary, the possibility remains exists, e.g. when parking or parking the car by actuating only a single actuating element Parking brake or * to apply the handbrake *

Further developments of the innovation are the subject of the subclaims "

The innovation is explained in more detail below with reference to the figures using an exemplary embodiment. Show it:

F ¹ Ig. i in a very simplified partial representation and in plan view a passenger car according to the innovation}

Fig. 2 is a section along the line 1-1 of fig. I.

In the figures, 1 is the frame of a passenger car which, in the illustrated embodiment, has two driven rear wheels 2 and 3. Both rear wheels have the usual ones Wheel brakes, shown in Fig. 1 sehematisGh with the reference number are specified and each part of the service brake systema (teydraulieehes braking system) as well as part of the parking brake systems (handbrake) are.

for the Park-Bremaen system are the wheel brakes 4 or their Actuating lever each connected to one end of a power transmission mechanism 5, each power transmission element 5 in the simplest case is a cable pull. One end of each power transmission mechanism 5 or cable is with a Actuating member of the respective wheel brake 4 connected, while the other end of this Kraftübertfagungsorganes at the free end an intermediate lever 6 is attached "A separate intermediate lever 6 is provided for each power transmission element" which is attached at its other end to a bearing sleeve 7 and - based on the axis of this bearing sleeve 7 -radial of the Bearing sleeve protrudes. Each intermediate lever 6 is with its bearing sleeve 7 on a shaft common to both intermediate levers

8 mounted in such a way * that a relative movement within certain limits between the intermediate lever 6 and the shaft 8 is possible, as this is explained in more detail below. Wave 8 is at

9 and IQ rotatable on frame 1 bef © pin. Aw the one Eftde de * Shaft 8, i.e. in the representation chosen for FIG. 1 at the left end protruding beyond the bearing 9, is on the shaft 8 non-rotatably attached to the usual operating lever 11 for the handbrake, this operating lever also with the at Handbrakes usual Räeineinrichtung cooperates * around the Actuating lever 11 in the tightened parking brake (applied handbrake) to hold the appropriate position *

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On each bearing sleeve 7 is a further actuating lever 12 is also attached, which is also radially from the relevant Bearing sleeve 7 protrudes. By appropriately pivoting the respective hook-shaped angled actuating levers 12 in In the direction of arrow A in panel 2, the wheel brakes 4 individually, i.e. individually via the associated power transmission element 5. Turn the bearing sleeves 7 look freely on shaft 8.

To when actuating the operating lever 11 in the sense of a Applying the parking brakes or the handbrake, i.e. for a Pivoting the actuating lever 11 in the direction of the arrow A to actuate both wheel brakes 4 together is en of the shaft θ for each auxiliary lever 6 a Ansehlag is provided, the The embodiment shown is formed by a pin 13 projecting radially away from the shaft θ. Every message or pen a counter stop or a counter stop surface 14 is assigned to the associated auxiliary lever 11, the arrangement of the Stop 13 and the counter-stop 14 is hit in such a way that the counter stop or the stop contact surface 14 leads the stop or pin 13 in the direction of arrow A, and also at when the operating lever 11 is in the rest position and the stop or when the operating lever 12 is in the rest position. Pin 13 lies as close as possible to the stop surface 14, For example, the pin 13 touches the stop surface 14 »At In the embodiment shown, the stop surface 14 is in each case from one end of a partially annular, continuous Slot 15 is formed in each bearing sleeve 7, which also has the advantage that by the pin arranged in the slot 15 13 the associated position sleeve 7 and thus also the associated one The intermediate lever 6 is held on the shaft 8 so that it cannot be displaced in the axial direction. By the described arrangement of the pen and the contact surface 14, when in the rest position (in

not actuated position) located actuating levers 11 to actuate the two wheel brakes 4 individually or individually with the aid of the actuating lever 12 »as has already been described above, whereby when an actuating

• hebeis 12 (swivel ttf * tt »* t f
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• III <ILI «Ift tf - himself the distance 8th Ϋ the investment area 14 in the direction of arrow A) only the Bearing sleeve 7 on the enlarged to pin 13 and the wave himself not turned Wave 8 pivots while will.

If the actuating lever 11 is actuated to apply the handbrake or pivoted in the direction of arrow A, then come regardless of the respective position of the operating lever IZ the pins 13 inevitably to rest against the associated contact surface 15 at any point in time (by turning the Shaft 8 in the direction of arrow A), so that both intermediate levers 6 are carried along by shaft 8 and in the direction of arrow A. pivoted together, i.e. both wheel brakes 4 are actuated together. In the illustrated embodiment, the Actuating lever 12 is the latching elements for locking or retaining, which are otherwise customary in actuating levers for hand brakes does not open in a certain actuation position, much more is ensured by the spring means already provided on the wheel brakes 4 or by additional spring means, that each actuating element 12 moves back into its starting position after it is released (against arrow A), Moved back at least until the associated stop surface 14 comes to rest against the associated pin 13.

The sense and purpose of the parking brake system described can be stated as follows:

It is assumed that the passenger car at least with one of its driven rear wheels, for example with the rear wheel 2 on a smooth surface (snow or Ice surface) is, and that for this reason starting the passenger car is not possible because the Power transmission via a non-lockable differential, the rear wheel 2 spins while the rear wheel 3 is stationary. By actuating the actuating lever 12 assigned to the rear wheel 2 (left in the representation selected for FIG. 1 Actuating lever 12) of the rear wheel 2 is braked individually and thus prevented from further spinning. This takes place

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a drive of the rear wheel 3, so that the passenger car can be started effortlessly. As soon as the rear wheel 2 is also located on a non-slip surface, the actuating lever 12 assigned to the rear wheel 2 is released. Of the Passenger cars can then continue to be driven in the usual way.

The innovation was described above using an exemplary embodiment. It goes without saying that changes as well as modifications are possible without thereby departing from the inventive concept on which the innovation is based. This is how it is, for example in principle also possible that the actuating lever 11 does not act directly on the shaft 8, but via an interposed one Power transmission unit, e.g. linkage or cable pull, is functionally connected to the shaft 8. Of course Instead of the actuating lever 11 provided for manual actuation, another actuating element can also be used, For example, a foot-operated element for handbrake actuation can be provided, as is the case with some passenger cars is already in use.

Claims (4)

t »t (t t · protection claims 1. Passenger cars with at least two driven wheels and with one acting on the wheel brakes of these wheels Park-brake system consisting of two power transmission organs, each of which has a wheel brake at one end and is connected to the other with a pivotable intermediate lever, which in turn with an actuator for the Parking brake is connected, characterized in that each power transmission member (5) on a separate Intermediate lever (6) engages that the intermediate lever (6) on a common shaft (8) and relative to this shaft (8) are pivotally mounted that the shaft (8) either directly or is connected to the actuating element (11) via a further force transmission element, vind that each intermediate lever (6 ^ has a stop surface (14) on the Shaft (8) a ("Vegenanschlag (13) is assigned, wherein Stop surface (14) and counter-stop (13) are each arranged so that in the direction of a pivoting movement Intermediate lever (6) in the sense of tightening the Ra ^ löremsen (4) the stop surface (14) leads the counter-stop (13). 2. Passenger car according to claim 1, characterized in that that each intermediate lever (6) is held pivotably on the shaft (8) with the aid of a bearing sleeve (7), and that each bearing sleeve (7) a partially ring-shaped or partially circular slot (15) has, one end of which forms the stop surface (14), and that the counter-stop is each formed by a pin (13) which projects radially away from the shaft (6) and in the slot (15) of the bearing sleeve (7) is arranged. 3. Passenger car according to claim 1 or 2, characterized in that each auxiliary lever is directly connected to a further actuating element (12). <o '" ^? i.:, · I Γ J ' I ··· ss 4. Passenger car according to claim 3, characterized in that each further actuating element is an actuating lever (12) is on the intermediate lever (6) or on its Lagerhülsp 7. One end is attached. § 5. Passenger car according to claim 1 or 2, characterized by (shows that each auxiliary lever (6) has an additional Power transmission element is connected to another actuator. . " · · · · ··» III SS Il ίί ¹ Ti! SS ί "ί! ¹ ti »III S S Il Ti! SS ί "ίί!